Ventilator.



G. J. ROOZEE.

VENTILATOR. APPLICATION FILED FEB-18,1915- Patented May 2, 1916.

adj-@699 GERARD JOAN ROOZEE. OF CHICAGO, ILLINOIS.

VENTILATOR.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed February 18, 1915. Serial No. 8,983.

To all whom it may concern:

Be it known that I, GERARD J OAN Rooznn, a subject of the Queen of the Netherlands, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

This invention relates more particularly to devices which are usually placed at the tops of pipes extending up from buildings, for the purpose of permitting or causing air or other gases to pass up through said pipes. Such devices are also frequently used in connection with stacks or stove pipes. I am aware that various devices of this kind have heretofore been proposed, but such devices have generally been lacking in various ways, and particularly in failing to cause a suflicient amount of forced draft under the action of the wind.

Among the objects of the present invention are to improve the general construction of ventilators; to provide a ventilator which will cause a forced draft or ventilation under the action of the wind coming from any direction; to provide a ventilator or covering for a ventilating pipe which will protect the exposed end of the pipe, and will prevent rain or water passing down the same; and to provide such other advantages and improvements as will appear more fully from the following specification.

In the accompanying drawings illustrating this invention:

Figure 1 is a vertical sectional view of my improved ventilator; and Fig. 2 is a horizontal sectional fragment taken on the line 2-2 of Fig. 1.

As illustrated in these drawings, 3 repre sents a chimney or ventilating pipe with my improved cowl or ventilator applied thereto. This comprises an inverted conically shaped member or frustum of a cone 4, which is connected at 5 with the pipe and its open upper end lies in a plane coinciding with the top of the pipe. A second cone or conical cap 6 is arranged above the cone 4, and its base is spaced apart from the upper end of the cone 4, so as to leave a circumferential opening 7 between the adjacent bases of the two cones. These cones are secured together in any convenient manner, as by means of braces 8. A conical deflector 9 has its smaller end secured to the pipe 3 at 5, and its base connects with a second deflector 10, which has its smaller end secured at 11 to the pipe 8. A third deflector 12 is secured by means of braces 13 to the cone 4. The upper portion of this deflector is substantially conical, with its large end lying in a plane coincident with the upper end of the cone 4, while the lower end of this deflector is curved outwardly to make a somewhat bell-shaped mouth at its lower end, which extends down approximately to the lower end of the cone 4. As will be seen from the drawings, the sides of the deflector 12 are not parallel with the sides of the cone 4, the space between these parts contracting toward'their upper ends. Two other conical deflectors 14 and 15 are connected together at their bases or larger ends, the line of connection lying in a plane passing about midway of the space 7 These deflectors are spaced outwardly from the cones 4 and 6, as indicated, and are held in position by braces 16. A number of holes 17 are arranged in the lower end of the cone 4 to permit any water which is caught by this cone to pass down outside of the pipe 3, the water being deflected away from the pipe by the deflector 9.

The object of the deflectors arranged in conjunction with the spaced apart cones is to provide an arrangement whereby a draft will be created by the wind or air blowing in any direction toward the ventilator, such wind or air being used to create a suction in the pipe 3. For instance, if the wind approaches from the right, as indicated in Fig. 1 by the arrows A, that portion striking the deflector 9 will be directed upwardly into the lower mouth of the deflector 12, and the wind will pass up between the deflector and the cone 4, and will rush past the opening 7 and then up and out between the deflector 15 and cap 6. As the air passes the opening 7 it will tend to draw the air out of the space between the cones 4 and 6, thereby tending to create a vacuum at the top of the pipe 3, and therefore drawing the air up through said pipe. It will, of course, be observed that there will be something of a spiral or circumferential movement to the wind pas ing between the deflectors and cones, which will further tend to accentuate the suction. If the wind or air outside of the pipe is directed more or less upwardly, then the deflector 10 will tend to guide the wind up into the bell mouth of the deflector 12, being assisted also by the deflector 9, and a portion of the Win may also pass up between the deflector 12 and the deflector 14, such wind then passing the opening 7 and up out at the top of the deflector 15. If the air or wind is passing downward-1y, it will enter the space between the deflector l5 and the cap 6, and being directed outwardly, will rush past the opening 7 and down between the deflectors l4 and 12 and the cone 4, there by creating a suction in the opening, between the cone 4 and cap 6. The wind passing over the outer surface of the deflectors 14 and 12 also acts to further-assist in drawing the air down between the deflector 15 and cap 6, thereby increasing the suction when the wind is moving down toward the top of the cowl. The reverse action is also true when the wind is passing in an upward direction, as the movement of the air past the upper end of the deflector 15 will tend to create a draft between this deflector and the cap 6. Rain or moisture striking the cap 6 will ordinarily pass down on the inside of the deflector 12, but if any water should get in the cone 4, it will run down to the lower end of the cone and out through the holes 17, so that it is practically impossible for any water to pass down through the pipe 3, the upper end of this pipe extending up into the cone 4 for this purpose. It will be observed that the holes 17 are not sufficiently large to affect the action of the air currents.

From this description it will be seen that I provide a cowl or ventilator which is substantially waterproof, and which will act to cause a suction on the ventilator pipe when the wind strikes the ventilator from any direction. On this account my improved ventilator is exceedingly eflicient, and will serve to create a considerable draft at any time there is any wind, as well as serving to permit the escape of air through the pipe 3 under ordinary conditions, as where the air is passing up from a heated room.

Having thus described my invention, which, however, I do not wish to limit to the exact construction shown and described, except as specified in the appended claims, what I claim and desire to secure by Letters Patent is: a

1. The combination with a ventilator pipe, of a cone 4 having its small end secured to the pipe, and its large end in alinement with the top of the pipe, a cap 6 arranged above said cone, with a circumferential space be tween them, a second cone 9 having its small end secured to the pipe 3 adjacent to the point of attachment of the cone 4, a third cone 10 having its large end connected with the base of the cone 9, and its lower end connected with the pipe 3, a conically shaped annular deflector 12 spaced outwardly from the cone 4, with its enlarged end'in aline- Copies of this patent may be obtained for five cents each; by addressing the Gommissionerct Patents;

ment with the upper end of the cone 4, and conically shaped deflectors 14 and 15, having their largeendsconnected, said deflectors being directed upwardly and clownwardly from a plane passing substantially through the center of the space between the cone 4 and cap 6, the arrangement being such that said deflectors will tend to direct the wind past the opening between said cone 4 and cap 6. r

2. The combination with a ventilator pipe 3, of a cone 4 having its small end attached to the pipe, and its large end directed upwardly, a conical cap 6 secured above said cone 4, the base of said cap being of substantially the same diameter as the upper end of the cone, a space being left between said enlarged ends, a conical deflector 9 having its small end secured to the pipe adjacent to the point of attachment of the cone 4, and being directed downwardly, a second conical deflector 10 having its enlarged end connected with the lower end of the deflector 9, and its smaller end connected with the pipe 3, an annular ring deflector 12 spaced outwardly from the cone 4, with its upper endterminating adjacent to the upper end of the cone, said deflector being of substantially conical shape at its upper end, and being curved outwardly at its lower end, a fourth annular conical deflector 14 spaced outwardly from the deflector 12, with its enlarged upper end terminating slightlyabove the upper end of said deflector 12, and its lower end terminating about midway of the deflectoril2, and a fifth annular conically shaped deflector 15 spaced outwardly from the cap 6, with its enlarged lower end con necting with the upper end of the deflector 14, and its smaller upper end projecting upwardly a short distance past the space between the cone 4 and cap 6.

3. The combination with a ventilator pipe, of an upwardly and outwardly extending conically shaped member, a conical cap arranged above said member, and spaced a:

short distance therefrom, a deflector comprising a ring of substantially V-shaped cross section arranged a short distance from said space :and extending upwardly and downwardly with respect thereto, and a second deflector having a substantially conically shaped upper wardly curved lower end arranged between said conical member and said first-named deflector, and having its lower end extending downwardly beyond said ring to a point adjacent to the lower end of'said first-named member.

GERARD JOAN ROOZEE. Witnesses HENRY Rooznn, E. V. 'GUsTArsoN.

Washington, D. 0.

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